<!-- 顶部导航栏 -->
<template>
  <navbar
    :alway="isAlways"
    :back="false"
    bg=""
    :placeholder="isPlaceholder"
    :bg-styles="bgStyles"
    :opacity="isOpacity"
    :sticky="sticky"
  >
    <template #item>
      <view class="nav-box">
        <view v-if="showLeftButton" class="nav-icon">
          <view class="icon-box ss-flex" :class="{ 'inner-icon-box': data.styleType === 'inner' }">
            <view class="icon-button icon-button-left ss-flex ss-row-center" @tap="onClickLeft">
              <text v-if="hasHistory" class="sicon-back" />
              <text v-else class="sicon-home" />
            </view>
            <view class="line"></view>
            <view class="icon-button icon-button-right ss-flex ss-row-center" @tap="onClickRight">
              <text class="sicon-more" />
            </view>
          </view>
        </view>
        <view
          v-for="(item, index) in navList"
          :key="index"
          class="nav-item"
          :style="[parseImgStyle(item)]"
          :class="[{ 'ss-flex ss-col-center ss-row-center': item.type !== 'search' }]"
        >
          <navbar-item :data="item" :width="parseImgStyle(item).width" />
        </view>
      </view>
    </template>
  </navbar>
</template>

<script setup>
/**
 *  装修组件 - 自定义标题栏
 *
 *
 * @property {Number | String}  alwaysShow = [0,1]			    - 是否常驻
 * @property {Number | String}  styleType = [inner]			   	- 是否沉浸式
 * @property {String | Number} type 		 					- 标题背景模式
 * @property {String} color 		 							- 页面背景色
 * @property {String} src 		 								- 页面背景图片
 */
import { computed, unref } from 'vue'
import sheep from '@/sheep'
import Navbar from './components/navbar.vue'
import NavbarItem from './components/navbar-item.vue'
import { showMenuTools } from '@/hooks/useModal'

const props = defineProps({
  data: {
    type: Object,
    default: () => ({}),
  },
  showLeftButton: {
    type: Boolean,
    default: false,
  },
})
const hasHistory = sheep.$router.hasHistory()
const sticky = computed(() => {
  if (props.data.styleType === 'inner') {
    if (props.data.alwaysShow) {
      return false
    }
  }
  if (props.data.styleType === 'normal') {
    return false
  }
})
const navList = computed(() => {
  // #ifdef MP
  return props.data.mapCells || []
  // #endif
  return props.data.otherCells || []
})
// 页面宽度
const windowWidth = sheep.$platform.device.windowWidth
// 单元格宽度
const cell = computed(() => {
  if (unref(navList).length) {
    // 默认宽度为8个格子，微信公众号右上角有胶囊按钮所以是6个格子
    let cell = (windowWidth - 90) / 8
    // #ifdef MP
    cell = (windowWidth - 80 - unref(sheep.$platform.capsule).width) / 6
    // #endif
    return cell
  }
})
// 解析位置
const parseImgStyle = (item) => {
  let obj = {
    width: item.width * cell.value + (item.width - 1) * 10 + 'px',
    left: item.left * cell.value + (item.left + 1) * 10 + 'px',
    'border-radius': item.borderRadius + 'px',
  }
  return obj
}
const isAlways = computed(() => (props.data.styleType === 'inner' ? Boolean(props.data.alwaysShow) : true))
const isOpacity = computed(() =>
  props.data.styleType === 'normal' ? false : props.showLeftButton ? false : props.data.styleType === 'inner'
)
const isPlaceholder = computed(() => props.data.styleType === 'normal')
const bgStyles = computed(() => {
  return {
    background:
      props.data.bgType === 'img' && props.data.bgImg
        ? `url(${sheep.$url.cdn(props.data.bgImg)}) no-repeat top center / 100% 100%`
        : props.data.bgColor,
  }
})
// 左侧按钮：返回上一页或首页
function onClickLeft() {
  if (hasHistory) {
    sheep.$router.back()
  } else {
    sheep.$router.go('/pages/index/index')
  }
}
// 右侧按钮：打开快捷菜单
function onClickRight() {
  showMenuTools()
}
</script>

<style lang="scss" scoped>
.nav-box {
  width: 750rpx;
  position: relative;
  height: 100%;

  .nav-item {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
  }
  .nav-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: 20rpx;
    .inner-icon-box {
      border: 1px solid rgba(#fff, 0.4);
      background: none !important;
    }
    .icon-box {
      background: #ffffff;
      box-shadow: 0px 0px 4rpx rgba(51, 51, 51, 0.08), 0px 4rpx 6rpx 2rpx rgba(102, 102, 102, 0.12);
      border-radius: 30rpx;
      width: 134rpx;
      height: 56rpx;
      margin-left: 8rpx;
      .line {
        width: 2rpx;
        height: 24rpx;
        background: #e5e5e7;
      }
      .sicon-back {
        font-size: 32rpx;
      }
      .sicon-home {
        font-size: 32rpx;
      }
      .sicon-more {
        font-size: 32rpx;
      }
      .icon-button {
        width: 67rpx;
        height: 56rpx;
        &-left:hover {
          background: rgba(0, 0, 0, 0.16);
          border-radius: 30rpx 0px 0px 30rpx;
        }
        &-right:hover {
          background: rgba(0, 0, 0, 0.16);
          border-radius: 0px 30rpx 30rpx 0px;
        }
      }
    }
  }
}
</style>
